Aston Martin
DB11
Porsche
911
Aston Martin DB11 vs Porsche 911: 2025 Comparison
The short answer
Based on available data, the Porsche 911 comes out ahead of the Aston Martin DB11 on fuel economy and power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
DB11
Overall
Mixed sentiment with a clear divide between appreciation for its grand touring character and criticism of its driving dynamics and competitive positioning. The DB11 is consistently praised for its stunning aesthetics, long-distance comfort, and the emotional appeal of the V12 engine, particularly in earlier, naturally aspirated models from the VH platform. Owners report high satisfaction with its usability as a daily driver or for extensive road trips, citing a comfortable ride and a special, understated presence.
Best version to buy
V12 models are overwhelmingly recommended over V8 models. The AMR trim is mentioned favorably.
Known issues
- ⚠Brake squeal (Brembo system): very loud squealing, especially at low speeds when brakes are warm. Frequency: recurrent.
- ⚠Feels heavy and lacks engagement: car feels large, heavy, and not as sharp or engaging to drive as competitors; V8 engine noted as underpowered for the chassis. Frequency: recurrent.
- ⚠High running costs: very expensive parts and labor; high insurance premiums with limited carrier options; specialist subscription required for repair manuals. Frequency: recurrent.
911
Overall
Sentiment is deeply polarized and varies significantly by generation and model. Long-term ownership satisfaction is frequently described as very high, with many owners reporting the car living up to or exceeding lifelong expectations. The 911 is often cited as a benchmark for driver engagement and is recognized as a highly satisfying vehicle to own.
Best version to buy
997.2 Generation: Specifically praised as the "absolute best modern 911" for combining hydraulic steering, a manual transmission, and a modern enough interior. The 997.1 Turbo is also highlighted as a desirable, proven performance variant with a durable engine and dry-sump oiling.
Known issues
- ⚠Extremely high maintenance and repair costs: Major engine or transmission failure can cost more than the car's value, and parts are exceptionally expensive. Frequency: very frequent.
- ⚠Turbo lag in modern turbocharged engines (991.2, 992): Noted as a significant dynamic flaw, with criticism that reviewers downplay its presence. Frequency: recurrent.
- ⚠Interior material quality and durability: Hard plastics, manual seats in base models, and specific issues like peeling door cards on 991 models left in the sun. Frequency: recurrent.
The verdict
The Aston Martin DB11 is the better choice for most buyers.
It has stronger reliability sentiment in owner reports than the Porsche 911, based on the data above. If the specific known issues on the Aston Martin DB11 are a dealbreaker, the Porsche 911 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Aston Martin DB11 or the Porsche 911?
Owner reports lean more positive on reliability for the Aston Martin DB11 than the Porsche 911. See the known issues comparison above for the specific concerns owners report on each.
Which is better for families, the Aston Martin DB11 or the Porsche 911?
Data on family-specific factors like cargo space is limited for one or both models, but based on available reports, both are positioned as practical daily drivers. Check the specs table above for seating and body type.
Which has better fuel economy, the Aston Martin DB11 or the Porsche 911?
The Porsche 911 is more fuel-efficient on paper: 11.6-11.8 L/100km combined versus 13.4 L/100km for the Aston Martin DB11, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Aston Martin DB11 or the Porsche 911?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Porsche 911 than the Aston Martin DB11. See the known issues comparison above.